%Utilise command pour exporter %latex Gpropagateur.tex
%dvips Gpropagateur.dvi -E -o Gpropagateur.eps

\documentclass[12pt,a4paper]{article}
%\usepackage{pstricks,pst-plot}
\usepackage[pdf]{pstricks}
\usepackage{pst-eps}
%\usepackage{xcolor}
\newcommand{\ff}{\mathbf{F}}%\newcommand{\ff}{\mathcal{F}}
\renewcommand{\gg}{\mathbf{G}}%\renewcommand{\gg}{\mathcal{G}}
\begin{document}
\begin{TeXtoEPS}  %enlever pour visualiser
\psset{unit=1.5cm}
\begin{pspicture}(-2,-0.5)(2,2.5)
%axe
\psline[linewidth=2pt]{->}(-1.5,0)(1.5,0)
\psline[linewidth=2pt]{-}(-1.,-0.1)(-1,0.1)
\psline[linewidth=2pt]{-}(1.,-0.1)(1,0.1)
\rput(-1,-0.3){$T_n$}
\rput(1,-0.3){$T_{n+1}$}
\rput(0,-0.2){$\Delta T$}
%axe vertical
\psline[linestyle=dashed,dash= 2pt 1pt](-1,0.2)(-1,2)
\psline[linestyle=dashed,dash= 2pt 1pt](1,0.2)(1,2)
%F
\rput(-1,1.){{\color{red} $\bullet$}}
\rput(1,1.5){{\color{red} $\bullet$}}
\psline[linewidth=0.2pt,linearc=.25]{->}(-1,1.)(-0.5,0.5)(0,1)(0.5,1.7)(0.95,1.5)
\rput(0,0.8){$\ff_n$}
\rput(-1.2,1){$u$}
\rput(1.7,1.5){$v=\ff_n(u)$}
%G
\pscurve[linewidth=1 pt,linearc=.25]{->}(-1,1.8)(0,2)(1,1.8)
\rput(0,1.8){$\gg^k_n$}
\end{pspicture}
\end{TeXtoEPS}
\end{document}
